Preparation method of low-carbon spheroidized marine silicate and cement prepared from low-carbon spheroidized marine silicate

The invention provides a preparation method of low-carbon spheroidized maritime work silicate and cement prepared from the low-carbon spheroidized maritime work silicate. The low-carbon spheroidized maritime work silicate cement has the particle size and interval accumulative distribution as follows: 13%-23% of a part with the particle size smaller than 3 microns, 50%-70% of a part with the particle size smaller than 32 microns and 8%-18% of residues on a square hole sieve with the particle size smaller than 45 microns. The invention also provides a preparation method of the low-carbon spheroidized maritime work Portland cement. The mixed material is directly fed into a novel dry-process energy-saving vertical grinder for grinding and shaping. The particle size distribution of the low-carbon spheroidized cement is optimized, the circularity is improved, the length-diameter ratio is reduced, the distribution interval of the length-diameter ratio and the circularity of particles is small, the particle size dist